1
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Busch J, Kotwica D, Al Sheakh L, Headen T, Youngs TGA, Paschek D, Ludwig R. Quantification and Distribution of Three Types of Hydrogen Bonds in Mixtures of an Ionic Liquid with the Hydrogen-Bond-Accepting Molecular Solvent DMSO Explored by Neutron Diffraction and Molecular Dynamics Simulations. J Phys Chem Lett 2023; 14:2684-2691. [PMID: 36892277 DOI: 10.1021/acs.jpclett.3c00018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The concept of hydrogen bonding is celebrating its 100th birthday. Hydrogen bonds (H-bonds) play a key role in the structure and function of biological molecules, the strength of materials, and molecular binding. Herein, we study H-bonding in mixtures of a hydroxyl-functionalized ionic liquid with the neutral, H-bond-accepting molecular liquid dimethylsulfoxide (DMSO) using neutron diffraction experiments and molecular dynamics simulations. We report the geometry, strength, and distribution of three different types of H-bond OH···O, formed between the hydroxyl group of the cation and either the oxygen atom of another cation, the counteranion, or the neutral molecule. Such a variety of different strengths and distributions of H-bonds in one single mixture could hold the promise of providing solvents with potential applications in H-bond-related chemistry, for example, to alter the natural selectivity patterns of catalytic reactions or the conformation of catalysts.
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Affiliation(s)
- Johanna Busch
- Institut für Chemie, Abteilung Physikalische und Theoretische Chemie, Universität Rostock, Albert-Einstein-Str. 27, 18059 Rostock, Germany
| | - David Kotwica
- Institut für Chemie, Abteilung Physikalische und Theoretische Chemie, Universität Rostock, Albert-Einstein-Str. 27, 18059 Rostock, Germany
| | - Loai Al Sheakh
- Institut für Chemie, Abteilung Physikalische und Theoretische Chemie, Universität Rostock, Albert-Einstein-Str. 27, 18059 Rostock, Germany
| | - Thomas Headen
- ISIS Faculty, STFC, Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - Tristan G A Youngs
- ISIS Faculty, STFC, Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - Dietmar Paschek
- Institut für Chemie, Abteilung Physikalische und Theoretische Chemie, Universität Rostock, Albert-Einstein-Str. 27, 18059 Rostock, Germany
| | - Ralf Ludwig
- Institut für Chemie, Abteilung Physikalische und Theoretische Chemie, Universität Rostock, Albert-Einstein-Str. 27, 18059 Rostock, Germany
- Department LL&M, Universität Rostock, Albert-Einstein-Str. 25, 18059 Rostock, Germany
- Leibniz-Institut für Katalyse an der Universität Rostock e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany
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2
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De CK, Ghosh A, Mandal PK. Hydrophobicity-Dependent Heterogeneous Nanoaggregates and Fluorescence Dynamics in Room-Temperature Ionic Liquids. J Phys Chem B 2022; 126:1551-1557. [PMID: 35166544 DOI: 10.1021/acs.jpcb.1c08598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The hydrophobicity of room-temperature ionic liquids (RTILs) has been shown to have a very significant effect on the optical and structural properties of and in RTILs. The average excited state lifetime of neat RTILs has been shown to be increasing with increasing hydrophobicity of the RTILs. By employing pico-nanosecond-based fluorescence anisotropy decay, the volume of the nanoaggregates in neat RTILs have been calculated. The volume of these nanoaggregates have been shown to be decreasing with increase in hydrophobicity of the RTILs. Thus, hydrophobicity has been shown to have an important role, i.e., hydrophobicity can be used as a handle to tune the properties of RTILs as designer solvents. Moreover, the excited-state lifetime of red-emitting fluorophores, i.e., whose fluorescence emission is not perturbed by the inherent emission of RTILs, has been shown to increase with the increasing hydrophobicity of the RTILs. Highly hydrophobic RTILs have been shown to exhibit positive deviation and highly hydrophilic RTIL has been shown to exhibit negative deviation from the linear correlation between average solvation time (τs) versus viscosity/temperature (η/T).
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3
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Ishii Y, Matubayasi N. Self-Consistent Scheme Combining MD and Order- N DFT Methods: An Improved Set of Nonpolarizable Force Fields for Ionic Liquids. J Chem Theory Comput 2019; 16:651-665. [PMID: 31873016 DOI: 10.1021/acs.jctc.9b00793] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The nonpolarizable force field of ionic liquids is tuned by using the self-consistent scheme of molecular dynamics (MD) simulation and first-principles calculation based on the order-N density functional theory (DFT). The atomic charges are determined by using the whole MD cell for DFT calculation and accounts effectively for the many-body effects of charge transfer and intramolecular polarization. The charges represent effective interactions in the condensed phase within the framework of the nonpolarizable force field and can be an alternative for an explicitly many-body model incorporating, for example, polarizability. Here we demonstrate the performance of nonpolarizable force field determined with the MD-DFT self-consistent scheme in imidazolium-, pyrrolidinium-, and ammonium-based ionic liquids. The variation ranges of molecular charges are much larger with the compositions of the ionic liquid than with the thermodynamic conditions, and the charge-ordering structures become systematically weaker with the effective charges. For energetic properties, while the calculated heat of vaporization depends on the atomic and molecular charges, the corresponding heat capacity is not strongly affected by the DFT-based variation. For transport properties, the self-diffusion coefficient, electrical conductivity, and viscosity vary much more in the self-consistent scheme. The effective DFT charge is observed to enhance the fluidity of ionic liquids and improve the accuracy of electrical conductivity and viscosity. This is due to the weakened interactions among the ions, and the too slow motions observed with a full-charge model are well corrected through the iteration of MD and DFT. We therefore conclude that the set of nonpolarizable force fields obtained with the MD-DFT self-consistent scheme leads to better description of transport properties of ionic liquids.
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Affiliation(s)
- Yoshiki Ishii
- Division of Chemical Engineering, Graduate School of Engineering Science , Osaka University , Toyonaka , Osaka 560-8531 , Japan
| | - Nobuyuki Matubayasi
- Division of Chemical Engineering, Graduate School of Engineering Science , Osaka University , Toyonaka , Osaka 560-8531 , Japan.,Elements Strategy Initiative for Catalysts and Batteries , Kyoto University , Katsura , Kyoto 615-8520 , Japan
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4
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Turner AH, Imberti S, Swadźba-Kwaśny M, Holbrey JD. Applying neutron diffraction with isotopic substitution to the structure and proton-transport pathways in protic imidazolium bis{(trifluoromethyl)sulfonyl}imide ionic liquids. Faraday Discuss 2018; 206:247-263. [DOI: 10.1039/c7fd00143f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Neutron diffraction with isotopic substitution has been applied to examine the potential for complex-ion formation in protic imidazolium bis{(trifluoromethyl)sulfonyl}imide ionic liquids.
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Affiliation(s)
- Adam H. Turner
- School of Chemistry and Chemical Engineering
- The Queen’s University of Belfast
- Belfast
- UK
| | - Silvia Imberti
- ISIS
- Rutherford Appleton Laboratory
- Harwell Science & Innovation Campus
- Didcot
- UK
| | | | - John D. Holbrey
- School of Chemistry and Chemical Engineering
- The Queen’s University of Belfast
- Belfast
- UK
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5
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Russina O, Triolo A. Ionic Liquids and Neutron Scattering. NEUTRON SCATTERING - APPLICATIONS IN BIOLOGY, CHEMISTRY, AND MATERIALS SCIENCE 2017. [DOI: 10.1016/b978-0-12-805324-9.00004-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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6
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Liu H, Paddison SJ. Direct Comparison of Atomistic Molecular Dynamics Simulations and X-ray Scattering of Polymerized Ionic Liquids. ACS Macro Lett 2016; 5:537-543. [PMID: 35607231 DOI: 10.1021/acsmacrolett.6b00061] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The design of solid-state electrolytes for electrochemical applications that utilize polymerized ionic liquids (polyILs) would greatly benefit from a molecular-level understanding of structure-function relationships. We herein use atomistic molecular dynamics simulations to investigate the structural properties of a homologous series of poly(n-alkyl-vinylimidzolium bistrifluoromethylsulfonylimide) poly(nVim Tf2N) and present the first direct comparison of the structure factors obtained from X-ray scattering and simulations. Excellent agreement is found in terms of peak position and shape. The backbone-to-backbone correlation length increases at a rate of 1 Å/CH2. The longer alkyl chains lead to the longer backbone-to-backbone separation and the larger nonpolar nanodomains. This quantitative comparison of atomistic simulations to X-ray scattering will lead to a fundamental understanding in structure and morphology of polyILs and pave a path forward toward the rational design of future polyILs for electrochemical devices.
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Affiliation(s)
- Hongjun Liu
- Department of Chemical and
Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Stephen J. Paddison
- Department of Chemical and
Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
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7
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8
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Liu H, Paddison SJ. Direct calculation of the X-ray structure factor of ionic liquids. Phys Chem Chem Phys 2016; 18:11000-7. [DOI: 10.1039/c5cp06199g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A conceptually simple and computationally efficient direct method to calculate the total X-ray structure factor of ionic liquids from molecular simulations is advocated to be complementary to the popular Fourier transform (FT) method.
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Affiliation(s)
- Hongjun Liu
- Department of Chemical & Biomolecular Engineering
- University of Tennessee
- Knoxville
- USA
| | - Stephen J. Paddison
- Department of Chemical & Biomolecular Engineering
- University of Tennessee
- Knoxville
- USA
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9
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10
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Elbourne A, McDonald S, Voïchovsky K, Endres F, Warr GG, Atkin R. Nanostructure of the Ionic Liquid-Graphite Stern Layer. ACS NANO 2015; 9:7608-7620. [PMID: 26051040 DOI: 10.1021/acsnano.5b02921] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Ionic liquids (ILs) are attractive solvents for devices such as lithium ion batteries and capacitors, but their uptake is limited, partially because their Stern layer nanostructure is poorly understood compared to molecular solvents. Here, in situ amplitude-modulated atomic force microscopy has been used to reveal the Stern layer nanostructure of the 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMIm TFSI)-HOPG (highly ordered pyrolytic graphite) interface with molecular resolution. The effect of applied surface potential and added 0.1 wt/wt % Li TFSI or EMIm Cl on ion arrangements is probed between ±1 V. For pure EMIm TFSI at open-circuit potential, well-defined rows are present on the surface formed by an anion-cation-cation-anion (A-C-C-A) unit cell adsorbed with like ions adjacent. As the surface potential is changed, the relative concentrations of cations and anions in the Stern layer respond, and markedly different lateral ion arrangements ensue. The changes in Stern layer structure at positive and negative potentials are not symmetrical due to the different surface affinities and packing constraints of cations and anions. For potentials outside ±0.4 V, images are featureless because the compositional variation within the layer is too small for the AFM tip to detect. This suggests that the Stern layer is highly enriched in either cations or anions (depending on the potential) oriented upright to the surface plane. When Li(+) or Cl(-) is present, some Stern layer ionic liquid cations or anions (respectively) are displaced, producing starkly different structures. The Stern layer structures elucidated here significantly enhance our understanding of the ionic liquid electrical double layer.
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Affiliation(s)
- Aaron Elbourne
- †Discipline of Chemistry, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Samila McDonald
- †Discipline of Chemistry, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Kislon Voïchovsky
- ‡Department of Physics, Durham University, Durham DH1 3LE, United Kingdom
| | - Frank Endres
- §Institute of Electrochemistry, Clausthal University of Technology, Arnold-Sommerfeld-Str. 6, 38678 Clausthal-Zellerfeld, Germany
| | - Gregory G Warr
- ∥School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Rob Atkin
- †Discipline of Chemistry, The University of Newcastle, Callaghan, NSW 2308, Australia
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11
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Ghosh A, De CK, Chatterjee T, Mandal PK. What type of nanoscopic environment does a cationic fluorophore experience in room temperature ionic liquids? Phys Chem Chem Phys 2015; 17:16587-93. [PMID: 26055159 DOI: 10.1039/c5cp02036k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In the presence of a cationic fluorophore (rhodamine 6G) whose absorption has a significant spectral overlap with the emission of a room temperature ionic liquid (RTIL), the emission of the latter gets quenched, and the quenching has been shown to be dynamic in nature. It has been shown that resonance energy transfer (RET) indeed happens between the RTIL (donor) and rhodamine 6G (cationic acceptor), and RET is the reason for the quenching of the RTIL emission. The spectral and temporal aspects of the RET (between neat RTILs as the donors and rhodamine 6G as the acceptor) were closely studied by steady-state and picosecond time-resolved fluorescence spectroscopy. The influence of the alkyl chain length of the cation, size of the anion, excitation wavelength and concentration of the acceptor on the RET dynamics were also investigated. The energy transfer time (obtained from the rise time of the acceptor) was noted to vary from 2.5 ns to 4.1 ns. By employing the Förster formulation, the donor-acceptor distance was obtained, and its magnitude was found to vary between 31.8 and 37.1 Å. The magnitude of the donor-acceptor distance was shown to be independent of the alkyl chain length of the cation but dependent on the size of the anion of the RTIL. Moreover, the donor-acceptor distance was observed to be independent of the excitation wavelength or concentration of the acceptor. It was shown that the Förster formulation can possibly account for the mechanism and hence can explain the experimental observables in the RET phenomenon. Following the detailed experiments and rigorous analysis, a model has been put forward, which can successfully explain the nanoscopic environment that a cationic fluorophore experiences in an RTIL. Moreover, the nanoscopic environment experienced by the cationic probe has been noted to be different from that experienced by a neutral fluorophore.
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Affiliation(s)
- Anup Ghosh
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) - Kolkata, Mohanpur, West-Bengal 741246, India.
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12
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Affiliation(s)
- Robert Hayes
- Discipline
of Chemistry, The University of Newcastle, NSW 2308, Callaghan, Australia
| | - Gregory G. Warr
- School
of Chemistry, The University of Sydney, NSW 2006, Sydney, Australia
| | - Rob Atkin
- Discipline
of Chemistry, The University of Newcastle, NSW 2308, Callaghan, Australia
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13
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Norman SE, Turner AH, Youngs TGA. Structure of ionic liquids with amino acid anions via neutron diffraction. RSC Adv 2015. [DOI: 10.1039/c5ra06785e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Total neutron scattering studies on amino acid-based ionic liquids reveal significant directional interactions between anions, especially for serinate-derived ions.
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Affiliation(s)
- S. E. Norman
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast
- UK
| | - A. H. Turner
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast
- UK
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14
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McCune JA, Turner AH, Coleman F, White CM, Callear SK, Youngs TGA, Swadźba-Kwaśny M, Holbrey JD. Association and liquid structure of pyridine–acetic acid mixtures determined from neutron scattering using a ‘free proton’ EPSR simulation model. Phys Chem Chem Phys 2015; 17:6767-77. [DOI: 10.1039/c4cp05746e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Hydrogen-bonded molecular acetic acid chains are observed in acid–base mixtures from small angle neutron diffraction.
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Affiliation(s)
- Jade A. McCune
- The QUILL Research Centre
- School of Chemistry and Chemical Engineering, Queen's University Belfast
- Belfast BT9 5AG
- UK
| | - Adam H. Turner
- The QUILL Research Centre
- School of Chemistry and Chemical Engineering, Queen's University Belfast
- Belfast BT9 5AG
- UK
| | - Fergal Coleman
- The QUILL Research Centre
- School of Chemistry and Chemical Engineering, Queen's University Belfast
- Belfast BT9 5AG
- UK
| | - Caithlin M. White
- The QUILL Research Centre
- School of Chemistry and Chemical Engineering, Queen's University Belfast
- Belfast BT9 5AG
- UK
| | | | | | - Małgorzata Swadźba-Kwaśny
- The QUILL Research Centre
- School of Chemistry and Chemical Engineering, Queen's University Belfast
- Belfast BT9 5AG
- UK
| | - John D. Holbrey
- The QUILL Research Centre
- School of Chemistry and Chemical Engineering, Queen's University Belfast
- Belfast BT9 5AG
- UK
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15
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Tu KM, Ishizuka R, Matubayasi N. Spatial-decomposition analysis of electrical conductivity in ionic liquid. J Chem Phys 2014; 141:244507. [DOI: 10.1063/1.4904382] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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16
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Addicoat MA, Stefanovic R, Webber GB, Atkin R, Page AJ. Assessment of the Density Functional Tight Binding Method for Protic Ionic Liquids. J Chem Theory Comput 2014; 10:4633-4643. [PMID: 25328497 PMCID: PMC4196743 DOI: 10.1021/ct500394t] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Indexed: 01/17/2023]
Abstract
![]()
Density
functional tight binding (DFTB), which is ∼100–1000
times faster than full density functional theory (DFT), has been used
to simulate the structure and properties of protic ionic liquid (IL)
ions, clusters of ions and the bulk liquid. Proton affinities for
a wide range of IL cations and anions determined using DFTB generally
reproduce G3B3 values to within 5–10 kcal/mol. The structures
and thermodynamic stabilities of n-alkyl ammonium
nitrate clusters (up to 450 quantum chemical atoms) predicted with
DFTB are in excellent agreement with those determined using DFT. The
IL bulk structure simulated using DFTB with periodic boundary conditions
is in excellent agreement with published neutron diffraction data.
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Affiliation(s)
- Matthew A Addicoat
- School of Engineering and Science, Jacobs University Bremen , Campus Ring 1, 28759 Bremen, Germany
| | - Ryan Stefanovic
- Newcastle Institute for Energy and Resources, The University of Newcastle , NSW 2308, Callaghan, Australia
| | - Grant B Webber
- Newcastle Institute for Energy and Resources, The University of Newcastle , NSW 2308, Callaghan, Australia
| | - Rob Atkin
- Newcastle Institute for Energy and Resources, The University of Newcastle , NSW 2308, Callaghan, Australia
| | - Alister J Page
- Newcastle Institute for Energy and Resources, The University of Newcastle , NSW 2308, Callaghan, Australia
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17
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Paredes X, Fernández J, Pádua AAH, Malfreyt P, Malberg F, Kirchner B, Pensado AS. Bulk and Liquid–Vapor Interface of Pyrrolidinium-Based Ionic Liquids: A Molecular Simulation Study. J Phys Chem B 2014; 118:731-42. [DOI: 10.1021/jp406651f] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xavier Paredes
- Laboratorio de
Propiedades Termofı́sicas, Departamento de
Fı́sica Aplicada, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Josefa Fernández
- Laboratorio de
Propiedades Termofı́sicas, Departamento de
Fı́sica Aplicada, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Agílio A. H. Pádua
- Institut de Chimie
de Clermont-Ferrand, Equipe Thermodynamique et Interactions Moléculaires, Clermont Université, Université Blaise Pascal, BP 80026, 63171 Aubiere, France
- CNRS, UMR6296 ICCF, BP 80026, F-63171 Aubière, France
| | - Patrice Malfreyt
- Institut de Chimie
de Clermont-Ferrand, Equipe Thermodynamique et Interactions Moléculaires, Clermont Université, Université Blaise Pascal, BP 80026, 63171 Aubiere, France
- CNRS, UMR6296 ICCF, BP 80026, F-63171 Aubière, France
| | - Friedrich Malberg
- Mulliken Center
for Theoretical Chemistry, Institut für Physikalische und Theoretische
Chemie, Universität Bonn, Beringstrasse 4+6, D-53115 Bonn, Germany
| | - Barbara Kirchner
- Mulliken Center
for Theoretical Chemistry, Institut für Physikalische und Theoretische
Chemie, Universität Bonn, Beringstrasse 4+6, D-53115 Bonn, Germany
| | - Alfonso S. Pensado
- Laboratorio de
Propiedades Termofı́sicas, Departamento de
Fı́sica Aplicada, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
- Mulliken Center
for Theoretical Chemistry, Institut für Physikalische und Theoretische
Chemie, Universität Bonn, Beringstrasse 4+6, D-53115 Bonn, Germany
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18
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Moriya M, Watanabe T, Nabeno S, Sakamoto W, Yogo T. Crystal Structure and Solid-state Ionic Conductivity of Cyclic Sulfonylamide Salts with Cyano-substituted Quaternary Ammonium Cations. CHEM LETT 2014. [DOI: 10.1246/cl.130874] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Makoto Moriya
- EcoTopia Science Institute, Nagoya University
- JST PRESTO
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19
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Greaves TL, Drummond CJ. Solvent nanostructure, the solvophobic effect and amphiphile self-assembly in ionic liquids. Chem Soc Rev 2013; 42:1096-120. [PMID: 23165291 DOI: 10.1039/c2cs35339c] [Citation(s) in RCA: 253] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The ability of ionic liquids (ILs) to support amphiphile self-assembly into a range of mesophase structures has been established as a widespread phenomenon. From the ILs evaluated as self-assembly media, the vast majority have supported some lyotropic liquid crystal phase formation. Many neat ionic liquids have been shown to segregate into polar and non-polar domains to form a nanostructured liquid. A very strong correlation between the nanostructure of the ionic liquid and its characteristics as an amphiphile self-assembly solvent has been found. In this review we discuss ionic liquids as amphiphile self-assembly media, and identify trends that can be used to distinguish which ionic liquids are likely to have good promotion properties as self-assembly media. In particular these trends focus on the nanostructure of neat ionic liquids, their solvent cohesive energy density, and the related solvophobic effect. We forecast that many more ILs will be identified as amphiphile self-assembly solvents in the future.
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Affiliation(s)
- Tamar L Greaves
- CSIRO Materials Science and Engineering, Bag 10, Clayton VIC 3169, Australia.
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20
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Hettige JJ, Kashyap HK, Annapureddy HVR, Margulis CJ. Anions, the Reporters of Structure in Ionic Liquids. J Phys Chem Lett 2013; 4:105-110. [PMID: 26291220 DOI: 10.1021/jz301866f] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this work we compare the role that different anions play in the structure function S(q) for a set of liquids with the same cation. It is well established that because of their amphiphilic nature and their often larger size, cations play a fundamental role in the structural landscape of ionic liquids. On the other hand, it is often atoms in the anions that display the largest X-ray form factors and therefore play a very significant role as reporters of structure in small- and wide-angle X-ray scattering (SAXS/WAXS)-type experiments. For a set of liquids with similar topological landscape, how does S(q) change when the anionic scattering is deemphasized? Also, how do we computationally recover the typical length scale of important and perhaps universal ionic liquid structural features such as charge alternation when these are experimentally inaccessible from S(q) because of interference cancellations? We answer these questions by studying three different tetrapentylammonium-based liquids with the I(-), PF6(-) and N(CN)2(-) anions.
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Affiliation(s)
- Jeevapani J Hettige
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Hemant K Kashyap
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | | | - Claudio J Margulis
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
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22
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Embs JP, Burankova T, Reichert E, Hempelmann R. Cation dynamics in the pyridinium based ionic liquid 1-N-butylpyridinium bis((trifluoromethyl)sulfonyl) as seen by quasielastic neutron scattering. J Phys Chem B 2012; 116:13265-71. [PMID: 23020511 DOI: 10.1021/jp3070344] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Quasielastic neutron scattering (QENS) has been used to study the cation dynamics in the pyridinium based ionic liquid (IL) 1-N-butylpyridinium bis((trifluoromethyl)sulfonyl)imide (BuPy-Tf(2)N). This IL allows for a detailed investigation of the dynamics of the cations only, due to the huge incoherent scattering cross section of the cation (σ(inc)(cation) >> σ(inc)(anion)). The measured spectra can be decomposed into two Lorentzian lines, indicative of two distinct dynamic processes. The slower of these two processes is diffusive in nature, whereas the faster one can be attributed to localized motions. The temperature dependence of the diffusion coefficient of the slow process follows an Arrhenius law, with an activation energy of E(A) = 14.8 ± 0.3 kJ/mol. Furthermore, we present here results from experiments with polarized neutrons. These experiments clearly show that the slower of the two observed processes is coherent, while the faster one is incoherent in nature.
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Affiliation(s)
- Jan P Embs
- Laboratory for Neutron Scattering, Paul Scherrer Institut, Villigen-PSI, Switzerland.
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Kashyap HK, Santos CS, Annapureddy HVR, Murthy NS, Margulis CJ, Castner, Jr EW. Temperature-dependent structure of ionic liquids: X-ray scattering and simulations. Faraday Discuss 2012; 154:133-43; discussion 189-220, 465-71. [DOI: 10.1039/c1fd00059d] [Citation(s) in RCA: 151] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Fujii K, Kanzaki R, Takamuku T, Kameda Y, Kohara S, Kanakubo M, Shibayama M, Ishiguro SI, Umebayashi Y. Experimental evidences for molecular origin of low-Q peak in neutron/x-ray scattering of 1-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide ionic liquids. J Chem Phys 2011; 135:244502. [DOI: 10.1063/1.3672097] [Citation(s) in RCA: 132] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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Umebayashi Y, Hamano H, Seki S, Minofar B, Fujii K, Hayamizu K, Tsuzuki S, Kameda Y, Kohara S, Watanabe M. Liquid Structure of and Li+ Ion Solvation in Bis(trifluoromethanesulfonyl)amide Based Ionic Liquids Composed of 1-Ethyl-3-methylimidazolium and N-Methyl-N-propylpyrrolidinium Cations. J Phys Chem B 2011; 115:12179-91. [DOI: 10.1021/jp2072827] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yasuhiro Umebayashi
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Hiroshi Hamano
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Shiro Seki
- Materials Science Research Laboratory, Central Research Institute of Electric Power Industry (CRIEPI), 2-11-1, Iwado-kita, Komae, Tokyo 201-8511, Japan
| | - Babak Minofar
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Kenta Fujii
- Neutron Scattering Laboratory, Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Kikuko Hayamizu
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Center, Tsukuba, Ibaraki, 305-8565, Japan
| | - Seiji Tsuzuki
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Center, Tsukuba, Ibaraki, 305-8565, Japan
| | - Yasuo Kameda
- Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan
| | - Shinji Kohara
- Japan Synchrotron Radiation Research Institute (JASRI), Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Masayoshi Watanabe
- Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai Hodogaya-ku, Yokohama 240-8501, Japan
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Castner EW, Margulis CJ, Maroncelli M, Wishart JF. Ionic liquids: structure and photochemical reactions. Annu Rev Phys Chem 2011; 62:85-105. [PMID: 21091193 DOI: 10.1146/annurev-physchem-032210-103421] [Citation(s) in RCA: 260] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Ionic liquids are subjects of intense current interest within the physical chemistry community. A great deal of progress has been made in just the past five years toward identifying the factors that cause these salts to have low melting points and other useful properties. Supramolecular structure and organization have emerged as important and complicated topics that may be key to understanding how chemical reactions and other processes are affected by ionic liquids. New questions are posed, and an active debate is ongoing regarding the nature of nanoscale ordering in ionic liquids. The topic of reactivity in ionic liquids is still relatively unexplored; however, the results that have been obtained indicate that distributed kinetics and dynamical heterogeneity may sometimes, but not always, be influencing factors.
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Affiliation(s)
- Edward W Castner
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854-8066, USA.
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Lethesh KC, Van Hecke K, Van Meervelt L, Nockemann P, Kirchner B, Zahn S, Parac-Vogt TN, Dehaen W, Binnemans K. Nitrile-Functionalized Pyridinium, Pyrrolidinium, and Piperidinium Ionic Liquids. J Phys Chem B 2011; 115:8424-38. [DOI: 10.1021/jp2027675] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Kristof Van Hecke
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, P.O. Box 2404, B-3001 Heverlee, Belgium
| | - Luc Van Meervelt
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, P.O. Box 2404, B-3001 Heverlee, Belgium
| | - Peter Nockemann
- The QUILL Research Centre, School of Chemistry and Chemical Engineering, David Keir Building, Stranmillis Road, Queen’s University Belfast, Belfast BT9 5AG, United Kingdom
| | - Barbara Kirchner
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstrasse 2, D-04103 Leipzig, Germany
| | - Stefan Zahn
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstrasse 2, D-04103 Leipzig, Germany
| | - Tatjana N. Parac-Vogt
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, P.O. Box 2404, B-3001 Heverlee, Belgium
| | - Wim Dehaen
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, P.O. Box 2404, B-3001 Heverlee, Belgium
| | - Koen Binnemans
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, P.O. Box 2404, B-3001 Heverlee, Belgium
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29
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Santos CS, Annapureddy HVR, Murthy NS, Kashyap HK, Castner EW, Margulis CJ. Temperature-dependent structure of methyltributylammonium bis(trifluoromethylsulfonyl)amide: X ray scattering and simulations. J Chem Phys 2011; 134:064501. [DOI: 10.1063/1.3526958] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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30
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Umebayashi Y, Hamano H, Tsuzuki S, Canongia Lopes JN, Pádua AAH, Kameda Y, Kohara S, Yamaguchi T, Fujii K, Ishiguro SI. Dependence of the Conformational Isomerism in 1-n-Butyl-3-methylimidazolium Ionic Liquids on the Nature of the Halide Anion. J Phys Chem B 2010; 114:11715-24. [DOI: 10.1021/jp1044755] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Yasuhiro Umebayashi
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Center 5, Tsukuba, Ibaraki 305-8565, Japan, Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, and Instituto de Tecnologia Química e Biológica, UNL, Av. República Ap. 127, 2780 901 Oeiras, Portugal, Laboratoire Thermodynamique et Interactions Moléculaires, Université Blaise Pascal Clermont
| | - Hiroshi Hamano
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Center 5, Tsukuba, Ibaraki 305-8565, Japan, Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, and Instituto de Tecnologia Química e Biológica, UNL, Av. República Ap. 127, 2780 901 Oeiras, Portugal, Laboratoire Thermodynamique et Interactions Moléculaires, Université Blaise Pascal Clermont
| | - Seiji Tsuzuki
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Center 5, Tsukuba, Ibaraki 305-8565, Japan, Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, and Instituto de Tecnologia Química e Biológica, UNL, Av. República Ap. 127, 2780 901 Oeiras, Portugal, Laboratoire Thermodynamique et Interactions Moléculaires, Université Blaise Pascal Clermont
| | - José N. Canongia Lopes
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Center 5, Tsukuba, Ibaraki 305-8565, Japan, Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, and Instituto de Tecnologia Química e Biológica, UNL, Av. República Ap. 127, 2780 901 Oeiras, Portugal, Laboratoire Thermodynamique et Interactions Moléculaires, Université Blaise Pascal Clermont
| | - Agilio A. H. Pádua
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Center 5, Tsukuba, Ibaraki 305-8565, Japan, Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, and Instituto de Tecnologia Química e Biológica, UNL, Av. República Ap. 127, 2780 901 Oeiras, Portugal, Laboratoire Thermodynamique et Interactions Moléculaires, Université Blaise Pascal Clermont
| | - Yasuo Kameda
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Center 5, Tsukuba, Ibaraki 305-8565, Japan, Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, and Instituto de Tecnologia Química e Biológica, UNL, Av. República Ap. 127, 2780 901 Oeiras, Portugal, Laboratoire Thermodynamique et Interactions Moléculaires, Université Blaise Pascal Clermont
| | - Shinji Kohara
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Center 5, Tsukuba, Ibaraki 305-8565, Japan, Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, and Instituto de Tecnologia Química e Biológica, UNL, Av. República Ap. 127, 2780 901 Oeiras, Portugal, Laboratoire Thermodynamique et Interactions Moléculaires, Université Blaise Pascal Clermont
| | - Taishi Yamaguchi
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Center 5, Tsukuba, Ibaraki 305-8565, Japan, Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, and Instituto de Tecnologia Química e Biológica, UNL, Av. República Ap. 127, 2780 901 Oeiras, Portugal, Laboratoire Thermodynamique et Interactions Moléculaires, Université Blaise Pascal Clermont
| | - Kenta Fujii
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Center 5, Tsukuba, Ibaraki 305-8565, Japan, Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, and Instituto de Tecnologia Química e Biológica, UNL, Av. República Ap. 127, 2780 901 Oeiras, Portugal, Laboratoire Thermodynamique et Interactions Moléculaires, Université Blaise Pascal Clermont
| | - Shin-ichi Ishiguro
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Center 5, Tsukuba, Ibaraki 305-8565, Japan, Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, and Instituto de Tecnologia Química e Biológica, UNL, Av. República Ap. 127, 2780 901 Oeiras, Portugal, Laboratoire Thermodynamique et Interactions Moléculaires, Université Blaise Pascal Clermont
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Greaves TL, Kennedy DF, Mudie ST, Drummond CJ. Diversity Observed in the Nanostructure of Protic Ionic Liquids. J Phys Chem B 2010; 114:10022-31. [DOI: 10.1021/jp103863z] [Citation(s) in RCA: 210] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tamar L. Greaves
- CSIRO Molecular and Health Technologies, Bag 10, Clayton VIC 3169, Australia, Australian Synchrotron, 800 Blackburn Rd, Clayton VIC 3169, Australia, and CSIRO Materials Science and Engineering, Bag 33, Clayton VIC 3169, Australia
| | - Danielle F. Kennedy
- CSIRO Molecular and Health Technologies, Bag 10, Clayton VIC 3169, Australia, Australian Synchrotron, 800 Blackburn Rd, Clayton VIC 3169, Australia, and CSIRO Materials Science and Engineering, Bag 33, Clayton VIC 3169, Australia
| | - Stephen T. Mudie
- CSIRO Molecular and Health Technologies, Bag 10, Clayton VIC 3169, Australia, Australian Synchrotron, 800 Blackburn Rd, Clayton VIC 3169, Australia, and CSIRO Materials Science and Engineering, Bag 33, Clayton VIC 3169, Australia
| | - Calum J. Drummond
- CSIRO Molecular and Health Technologies, Bag 10, Clayton VIC 3169, Australia, Australian Synchrotron, 800 Blackburn Rd, Clayton VIC 3169, Australia, and CSIRO Materials Science and Engineering, Bag 33, Clayton VIC 3169, Australia
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Yan T, Wang Y, Knox C. On the Structure of Ionic Liquids: Comparisons between Electronically Polarizable and Nonpolarizable Models I. J Phys Chem B 2010; 114:6905-21. [DOI: 10.1021/jp9089112] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Tianying Yan
- Institute of New Energy Material Chemistry and Department of Material Chemistry, Nankai University, Tianjin 300071, China, Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, 55 East Zhongguancun Road, Beijing, 100190, China, and Center for Biophysical Modeling and Simulation and Department of Chemistry, University of Utah, Salt Lake City, Utah 84112-0850
| | - Yanting Wang
- Institute of New Energy Material Chemistry and Department of Material Chemistry, Nankai University, Tianjin 300071, China, Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, 55 East Zhongguancun Road, Beijing, 100190, China, and Center for Biophysical Modeling and Simulation and Department of Chemistry, University of Utah, Salt Lake City, Utah 84112-0850
| | - Craig Knox
- Institute of New Energy Material Chemistry and Department of Material Chemistry, Nankai University, Tianjin 300071, China, Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, 55 East Zhongguancun Road, Beijing, 100190, China, and Center for Biophysical Modeling and Simulation and Department of Chemistry, University of Utah, Salt Lake City, Utah 84112-0850
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Liu H, Sale KL, Holmes BM, Simmons BA, Singh S. Understanding the Interactions of Cellulose with Ionic Liquids: A Molecular Dynamics Study. J Phys Chem B 2010; 114:4293-301. [DOI: 10.1021/jp9117437] [Citation(s) in RCA: 267] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Hanbin Liu
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, California 94608, Biomass Science and Conversion Technology Department, Sandia National Laboratories, Livermore, California 94551, and Biosystems Research Department, Sandia National Laboratories, Livermore, California 94551
| | - Kenneth L. Sale
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, California 94608, Biomass Science and Conversion Technology Department, Sandia National Laboratories, Livermore, California 94551, and Biosystems Research Department, Sandia National Laboratories, Livermore, California 94551
| | - Bradley M. Holmes
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, California 94608, Biomass Science and Conversion Technology Department, Sandia National Laboratories, Livermore, California 94551, and Biosystems Research Department, Sandia National Laboratories, Livermore, California 94551
| | - Blake A. Simmons
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, California 94608, Biomass Science and Conversion Technology Department, Sandia National Laboratories, Livermore, California 94551, and Biosystems Research Department, Sandia National Laboratories, Livermore, California 94551
| | - Seema Singh
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, California 94608, Biomass Science and Conversion Technology Department, Sandia National Laboratories, Livermore, California 94551, and Biosystems Research Department, Sandia National Laboratories, Livermore, California 94551
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Hardacre C, Holbrey JD, Mullan CL, Nieuwenhuyzen M, Youngs TGA, Bowron DT, Teat SJ. Solid and liquid charge-transfer complex formation between 1-methylnaphthalene and 1-alkyl-cyanopyridinium bis{(trifluoromethyl)sulfonyl}imide ionic liquids. Phys Chem Chem Phys 2010; 12:1842-53. [DOI: 10.1039/b921160h] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Revillod G, Nishi N, Kakiuchi T. Orientation Correlation of Sulfosuccinate-based Room-Temperature Ionic Liquids Studied by Polarization-Resolved Hyper-Rayleigh Scattering. J Phys Chem B 2009; 113:15322-6. [DOI: 10.1021/jp907416m] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Guillaume Revillod
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Naoya Nishi
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Takashi Kakiuchi
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
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Hardacre C, Holbrey JD, Mullan CL, Nieuwenhuyzen M, Reichert WM, Seddon KR, Teat SJ. Ionic liquid characteristics of 1-alkyl-n-cyanopyridinium and 1-alkyl-n-(trifluoromethyl)pyridinium salts. NEW J CHEM 2008. [DOI: 10.1039/b805063e] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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KAKIUCHI T. Mutual Solubility of Hydrophobic Ionic Liquids and Water in Liquid-Liquid Two-phase Systems for Analytical Chemistry. ANAL SCI 2008; 24:1221-30. [DOI: 10.2116/analsci.24.1221] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Takashi KAKIUCHI
- Department of Energy and Hydrocarbon Chemistry, Kyoto University
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